Wingspan is a novel about a man who refuses to accept the word impossible - not out of arrogance, but because his mind genuinely cannot stop finding the way through.Harish Rao is modest by nature and dangerous by talent. He is the kind of man who walks into a rented shed with a retired scientist and walks out with a combustion breakthrough that changes the terms of an entire industry. When that industry tries to own him, he pivots - not in retreat, but in hunger - into the glamour and ruthlessness of Bollywood production, where the stakes are different but the wolves are the same.And then he finds the rotation detonation engine. The problem every serious aerospace mind has quietly given up on. The one nobody has cracked.Nobody except Harish.The engineering in Wingspan is real. The propulsion principles, the combustion physics, the aerodynamics - every technical strand in this novel has been built to hold under scrutiny. This is a thriller for readers who want the science to be as uncompromising as the story.Perfect for readers of Harold Robbins, Ayn Rand, and Vikram Chandra.